Rolling-machine fob plastic materials



G. K. BAINBRIDGE. ROLLINGl MACHINE FOR PLASTIC MATERIALS. APPLICATION FILED JAN.9. |919.

1,"303,O1.5. Patented May 1919.

m: Norms PETERS cc., Puomurua.. wAsNmmuN. n. c.

GEORGE K. BAINBRIDGE, OFKRIPON, CALIFORNIA.

ROLLING-MACI-IIN E FORYPLA'STIC MATERIALS.

Specification of Letters Patent.

Patented May 6, 1919.

Apvpiication ined January 9, 1919. serial No. 270,391.

. To all whom may concern:

Be it known that I, GEORGE K. BAINBRIDGE,

a citizen of the United States of America,

residing at Ripon, in the county of San Joaquin and State of California, have invented `certain new and useful Improve ments in Rolling-Machines for Plastic Materials; and I do declare the following to be a lclear, full, and lexact description Aof the same, reference being had tothe accompanying drawings, and to the characters of reference marked thereon, which formr a part of this application.

Thisv invention relates to improvements in rolling machines for plasticmaterials, par-V ticularly candy in the making, lof the kind used as a illing for chocolatecreams, and is more particularly an improvement on certain portions of the machine shown in Letters 4Patent No. 1,192,156, granted me July y and to which reference is made hereinafter.

While utilizing the general principles of operation and construction as embodied in thepa-tent above noted, Ythe principal object of the present invention has been to provide a more positive means for gripping the plastic candy material While being rolled, and to insure that-each piece of such material will travel through the machine during the rolling process at a predetermined distance from the piece preceding it.

A further object of the invention has been to so arrange the conveyer belt'as used in my previous machine that it will have a cupped or concave surface so as to approximately be as close as possible to the cupped positionv of the hand, such means of rolling candies having been universally used in the past and having been successful in so far as that feature was concerned.

The concave belt also causes the candy material to position itself centrally of the belt when cut off after issuing from the press-outlet.

As a further object, I have provided a simple and eliicient means for accomplishing the above results.

These objects, I accomplish by means of such structure and relative arrangement of the parts as will fully appear by a perusal of the following specification and claims.

On the drawings, similar characters of reference indicate corresponding parts in the several views.

Figure 1 is a side elevation of a portion of my improved candy rolling machine.

i y Fig. 2 is a section taken on a line 2-2 of Fig. 1. y L

Fig. 3 is a plan view of a fragmentary portion of the belt.

vReferring now more particularly to the figures of reference on the dra-wings, the numeral 1 designates the rigid frame of the machine to which is mounted. the-conveyer belt frame Q., this frame being adapted for gyratory 0r circular movementY in a hori- Zontal plane in the same manner as more fully shown and described in Letters Patent No. 1,192,156, previously mentioned, this movement being transmitted thereto by ka power driven eccentric arm 3. .zAt each end off the belt frame is a roller Ll, over which passes an endless driven belt 5, preferably `constructed `of a rubberized fabric.

iThe outerface of this belt is vthickly set with shanp pyramid shaped teeth 6 formed integraliw'iththe belt. Positioned ona parallel plane to the belt 5 but below the same is a similar; endless belt 7 mounted to an auxiliary `frame S which is adjustable for height relative to thebelt 5. x

This belt 7 turns on rollers 9 which have asmaller diameter at the center Athan at their ends, and the upper portion of the belt lengthwise of its Vrollers is supported by a concave surfaced flooring 10, the beltconforming to the. contour of this flooring, as shown'in Fig. 2f rlhe belt 7- is also provided with teeth 11 similar to the teeth 6, but it is especially 'essentiallthat there shall be sharp ,teeth von the upper belt rather than on the lower. The principle of operation underlying the above described construction is as follows The belt 7 travels in the same direction as the belt 5 above it, but at a considerably higher rate of speed. The lumps of candy material when cut oft after issuing from the press on the machine are deposited on the lower belt and are carried along on the same at deinitely spaced intervals until they come in contact with the under and outer surface of the belt 5, the two belts being spaced apart so that the distance between the tops of the protruding teeth thereon is somewhat less at the center of the belts than the height of the rough lump of candy carried by the lower belt. Consequently, as soon as the said lmnp reaches upper belt, the

sharp teeth thereon are pressed into the sur face of the candy and each lump is firmly held from slipping out of its spaced position relative to the one ahead of it during the rolling process, which of course is carried out the entire length of the upper belt 5 as long as each lump remains thereunder, due to the gyratory or circular motion given to said upper belt in addition to its longitudinal movement. The rolling is aided in forming a :firm solid lump of candy out of each piece of material by the concave shape of the lower belt, which causes eachpiece of candy to be squeezed in a smaller space than at the central position at various intervals during the rolling process, thus imitating the motion given 1n hand rolling when the upper palm vis given the circular motion and the lower palm is cupped.

VVithput the sharp teeth, however, there is no chance for a grip of-the candy material between thetwo belts, as both of them are covered with powdered sugar or similar ma terial to prevent the sticky candy from adhering to the belts. The result is that while one such lump may beheld in its proper spaced position and successfully rolled, the piece following it may slip from contact with the upper belt, and traveling faster than the one ahead of it, owing 'to the greater speed of the lower belt by itself compared to the retarding action of the upper belt when in contact with a candy lump, will shortly come up to and push into the lump ahead, -rendering both int-o a shapeless inass'and necessitating the stopping of the machine to clean it off.

The vsame trouble is had with the use of broad, blunt teeth, as these merely tend to flatten the material out instead of piercing it, and thus ermit it to travel on the lower beltundistur ed, with the same ultimate result as stated in the preceding paragraph.

This difficulty I have successfully obvi- While this specification sets forth in de.`

tail the present and preferred construction of the device, still in practice, such deviations from such detail may be resorted to as dopnot form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described my invention, what I claim as new and useful and desire. to secure byy Letters Patent is l. In a rolling .machine for plastic materials, an endless driven belt, another driven belt above and spaced from the same and adapted for circular movement in a horizontal plane, the first named belt having a longitudinal speed in excess of that of the last named belt, and a plurality of sharp pointed teeth on each belt whereby a piece of plastic material will be firmly gripped between the two belts and held in Vpredetermined spaced relation to the preceding piece during the l,

rolling process.

2'. In a rolling machine for plastic materials, an endless drivenbelt provided with a plurality of sharp teeth and adapted for circular motion inl a horizcntal plane, another driven belt below the first named belt and a concave flooring under the upper portion oft-he lastnamed belt, the latter following the contour of the flooring whereby the material being rolled between the two belts will be subjectto a compressing movement at intervals during the rolling process.

In testimony whereof I aliX my signature.

GEORGE K. BAINBRIDG'E.

copies of this patent may be obtsinedlm'V ve cents each, by addressing, the` Commilimwr at Patent, Washington, I D. 0;1 

